SO what moment will be looking back on come 7pm?

Will it be the Finn Russell conversion that may have gifted Wales victory but also ate into their points difference in the final seconds at Murrayfield?

Maybe it will be the Leigh Halfpenny penalty that stretched the buffer against Ireland or perhaps it will be the TMO decision that denied England lock Dave Attwood a try on opening night in Cardiff.

All moments that have set the scene for a dramatic Six Nations finale, a day in front of the television that will leave viewers pledging to walk, jog or run off their indulgence tomorrow.

A three-way title tussle (only maths keeps France in the race) means that there will be a classic play today, a moment that those in red, white or green will look back on in years to come.

Wales are at a disadvantage by being first on the schedule against Italy (kick-off 12.30pm) and it's a tricky situation, as was proved by the Irish in Rome in 2007.

They chased a try to boost their points difference at the death rather than booting the ball out and instead had their own whitewash crossed. France then won the title by four points thanks to Elvis Vermeulen's last-gasp effort.

Warren Gatland's men have a rough idea of what they need to do to pile the pressure onto the Irish, who kick off in Edinburgh at 2.30pm, and the English, who start against Les Bleus at Twickenham at 5pm.

But they don't have the clarity that Stuart Lancaster's men will enjoy in London.

The aim is to put in such a dominant display at the Stadio Olimpico that the advantage is turned on its head, that they send their +12 rocketing and ensure the Irish (+33) and English (+37) are left needing to not only win but win well in games that are, on paper, tougher.

Not that the lunchtime clash in Rome will be a breeze, Italy may not be the most skilful or attractive of sides but they do have pride, especially after being thrashed by the French 29-0 on their own turf last weekend.

Wales have been drilled all week about the need to stick to the gameplan that has got them back on track after the England disappointment.

There will still be plenty of kicking, they will still go with a power approach and will attempt to put the squeeze on the Azzurri through the right boot of Leigh Halfpenny.

Only then, once they have chipped away at their hosts' confidence, can they entertain the idea of being more expansive.

The messages need to be clear and concise with kicking coach Neil Jenkins operating as the link between management and captain Sam Warburton when bringing on the water.

Wales must not let standards drop for 80 minutes as England did in Rome last year, when late changes stalled their progress and allowed Ireland to give Brian O'Driscoll the perfect send-off.

The bench much make an impact with hooker Ken Owens making a welcome return, tighthead prop Scott Andrews may be a source of worry at the set piece but can thrive in the loose and the qualities of flanker Justin Tipuric and centre Scott Williams are well-documented.

But a word of caution, Wales cannot afford a gung-ho attitude that leaves them vulnerable at the other end, they must show the same defensive bite that they did against Ireland last weekend.

It shows how far Wales have come in recent years that they are head to Rome with the rest of us talking about points difference rather than avoiding a banana skin.

Such talk has been helped by the absence of Italian talisman Sergio Parisse and the Azzurri certainly don't have a side to strike fear into their opponents.

The club names next to the Italian players are impressive with plenty of individuals plying their trade in the Aviva Premiership, and the likes of hooker Leonardo Ghiraldini and lock Josh Furno are talented, but as a side they are a bit plodding that are still hindered by problems at fly-half with Kelly Haimona not blessed with guile or accuracy from the tee.

Wales will be looking to play with intensity and a high ball-in-play time with three-pointers from Halfpenny enabling them to gradually chance their arm as the clock ticks in a structured rather than sevens style.

None of the wings have scored so far this tournament and today's situation could be of great benefit come the World Cup September; Wales need to play without the handbrake on and can show some of the verve that we know they are capable of.

Sam Warburton & Co are capable of giving Italy a 30-point tonking. Whether it will be enough is another matter.

Italy: L McLean (Sale); L Sarto (Zebre), L Morisi (Treviso), A Masi (Wasps), G Venditti (Zebre); K Haimona (Zebre), E Gori (Treviso); M Rizzo (Leicester), L Ghiraldini (Leicester, captain), M Castrogiovanni (Toulon), G Biagi (Zebre), J Furno (Newcastle), F Minto (Treviso), M Bergamasco (Zebre), S Vunisa (Zebre).

Replacements: A Manici (Zebre), A De Marchi (Sale), D Chistolini (Zebre), Q Geldenhuys (Zebre), R Barbieri (Leicester), G Palazzani (Zebre), L Orquera (Zebre), E Bacchin (Treviso).

Wales: L Halfpenny (Toulon); G North (Northampton Saints), J Davies (ASM Clermont Auvergne), J Roberts (Racing Metro), L Williams (Scarlets), D Biggar (Ospreys), R Webb (Ospreys), R Evans (Scarlets), S Baldwin (Ospreys), A Jarvis (Ospreys), L Charteris (Racing Metro), A W Jones (Ospreys), D Lydiate (Ospreys), S Warburton (Cardiff Blues, captain), T Faletau (Newport Gwent Dragons).

Replacements: K Owens (Scarlets), R Gill (Saracens), S Andrews (Cardiff Blues), J Ball (Scarlets), J Tipuric (Ospreys), G Davies (Scarlets), R Priestland (Scarlets), S Williams (Scarlets).

Referee: Jerome Garces (France)